2 This file is part of GNUnet.
3 Copyright (C) 2009 GNUnet e.V.
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA.
22 * @file multicast/gnunet-service-multicast.c
23 * @brief program that does multicast
24 * @author Christian Grothoff
27 #include "gnunet_util_lib.h"
28 #include "gnunet_signatures.h"
29 #include "gnunet_applications.h"
30 #include "gnunet_statistics_service.h"
31 #include "gnunet_core_service.h"
32 #include "gnunet_cadet_service.h"
33 #include "gnunet_multicast_service.h"
34 #include "multicast.h"
37 * Handle to our current configuration.
39 static const struct GNUNET_CONFIGURATION_Handle *cfg;
44 static struct GNUNET_SERVER_Handle *server;
48 * Only used during initialization.
50 static struct GNUNET_CORE_Handle *core;
55 static struct GNUNET_CADET_Handle *cadet;
58 * Identity of this peer.
60 static struct GNUNET_PeerIdentity this_peer;
63 * Handle to the statistics service.
65 static struct GNUNET_STATISTICS_Handle *stats;
68 * Notification context, simplifies client broadcasts.
70 static struct GNUNET_SERVER_NotificationContext *nc;
73 * All connected origin clients.
74 * Group's pub_key_hash -> struct Origin * (uniq)
76 static struct GNUNET_CONTAINER_MultiHashMap *origins;
79 * All connected member clients.
80 * Group's pub_key_hash -> struct Member * (multi)
82 static struct GNUNET_CONTAINER_MultiHashMap *members;
85 * Connected member clients per group.
86 * Group's pub_key_hash -> Member's pub_key_hash (uniq) -> struct Member * (uniq)
88 static struct GNUNET_CONTAINER_MultiHashMap *group_members;
91 * Incoming CADET channels with connected children in the tree.
92 * Group's pub_key_hash -> struct Channel * (multi)
94 static struct GNUNET_CONTAINER_MultiHashMap *channels_in;
97 * Outgoing CADET channels connecting to parents in the tree.
98 * Group's pub_key_hash -> struct Channel * (multi)
100 static struct GNUNET_CONTAINER_MultiHashMap *channels_out;
103 * Incoming replay requests from CADET.
104 * Group's pub_key_hash ->
105 * H(fragment_id, message_id, fragment_offset, flags) -> struct Channel *
107 static struct GNUNET_CONTAINER_MultiHashMap *replay_req_cadet;
110 * Incoming replay requests from clients.
111 * Group's pub_key_hash ->
112 * H(fragment_id, message_id, fragment_offset, flags) -> struct GNUNET_SERVER_Client *
114 static struct GNUNET_CONTAINER_MultiHashMap *replay_req_client;
118 * Join status of a remote peer.
128 enum ChannelDirection
136 * Context for a CADET channel.
141 * Group the channel belongs to.
143 * Only set for outgoing channels.
150 struct GNUNET_CADET_Channel *channel;
153 * CADET transmission handle.
155 struct GNUNET_CADET_TransmitHandle *tmit_handle;
158 * Public key of the target group.
160 struct GNUNET_CRYPTO_EddsaPublicKey group_pub_key;
163 * Hash of @a group_pub_key.
165 struct GNUNET_HashCode group_pub_hash;
168 * Public key of the joining member.
170 struct GNUNET_CRYPTO_EcdsaPublicKey member_pub_key;
173 * Remote peer identity.
175 struct GNUNET_PeerIdentity peer;
178 * Is the remote peer admitted to the group?
179 * @see enum JoinStatus
184 * Number of messages waiting to be sent to CADET.
186 uint8_t msgs_pending;
190 * @see enum ChannelDirection
197 * List of connected clients.
201 struct ClientList *prev;
202 struct ClientList *next;
203 struct GNUNET_SERVER_Client *client;
207 * Common part of the client context for both an origin and member.
211 struct ClientList *clients_head;
212 struct ClientList *clients_tail;
215 * Public key of the group.
217 struct GNUNET_CRYPTO_EddsaPublicKey pub_key;
220 * Hash of @a pub_key.
222 struct GNUNET_HashCode pub_key_hash;
225 * Is this an origin (#GNUNET_YES), or member (#GNUNET_NO)?
230 * Is the client disconnected? #GNUNET_YES or #GNUNET_NO
232 uint8_t disconnected;
237 * Client context for a group's origin.
244 * Private key of the group.
246 struct GNUNET_CRYPTO_EddsaPrivateKey priv_key;
249 * Last message fragment ID sent to the group.
251 uint64_t max_fragment_id;
256 * Client context for a group member.
263 * Private key of the member.
265 struct GNUNET_CRYPTO_EcdsaPrivateKey priv_key;
268 * Public key of the member.
270 struct GNUNET_CRYPTO_EcdsaPublicKey pub_key;
273 * Hash of @a pub_key.
275 struct GNUNET_HashCode pub_key_hash;
278 * Join request sent to the origin / members.
280 struct MulticastJoinRequestMessage *join_req;
283 * Join decision sent in reply to our request.
285 * Only a positive decision is stored here, in case of a negative decision the
286 * client is disconnected.
288 struct MulticastJoinDecisionMessageHeader *join_dcsn;
291 * CADET channel to the origin.
293 struct Channel *origin_channel;
296 * Peer identity of origin.
298 struct GNUNET_PeerIdentity origin;
301 * Peer identity of relays (other members to connect).
303 struct GNUNET_PeerIdentity *relays;
306 * Last request fragment ID sent to the origin.
308 uint64_t max_fragment_id;
311 * Number of @a relays.
313 uint32_t relay_count;
317 struct ReplayRequestKey
319 uint64_t fragment_id;
321 uint64_t fragment_offset;
327 * Task run during shutdown.
332 shutdown_task (void *cls)
336 GNUNET_CORE_disconnect (core);
341 GNUNET_CADET_disconnect (cadet);
346 GNUNET_STATISTICS_destroy (stats, GNUNET_YES);
349 /* FIXME: do more clean up here */
354 * Clean up origin data structures after a client disconnected.
357 cleanup_origin (struct Origin *orig)
359 struct Group *grp = &orig->grp;
360 GNUNET_CONTAINER_multihashmap_remove (origins, &grp->pub_key_hash, orig);
365 * Clean up member data structures after a client disconnected.
368 cleanup_member (struct Member *mem)
370 struct Group *grp = &mem->grp;
371 struct GNUNET_CONTAINER_MultiHashMap *
372 grp_mem = GNUNET_CONTAINER_multihashmap_get (group_members,
374 GNUNET_assert (NULL != grp_mem);
375 GNUNET_CONTAINER_multihashmap_remove (grp_mem, &mem->pub_key_hash, mem);
377 if (0 == GNUNET_CONTAINER_multihashmap_size (grp_mem))
379 GNUNET_CONTAINER_multihashmap_remove (group_members, &grp->pub_key_hash,
381 GNUNET_CONTAINER_multihashmap_destroy (grp_mem);
383 if (NULL != mem->join_dcsn)
385 GNUNET_free (mem->join_dcsn);
386 mem->join_dcsn = NULL;
388 GNUNET_CONTAINER_multihashmap_remove (members, &grp->pub_key_hash, mem);
393 * Clean up group data structures after a client disconnected.
396 cleanup_group (struct Group *grp)
398 (GNUNET_YES == grp->is_origin)
399 ? cleanup_origin ((struct Origin *) grp)
400 : cleanup_member ((struct Member *) grp);
407 replay_key_hash (uint64_t fragment_id, uint64_t message_id,
408 uint64_t fragment_offset, uint64_t flags,
409 struct GNUNET_HashCode *key_hash)
411 struct ReplayRequestKey key = {
412 .fragment_id = fragment_id,
413 .message_id = message_id,
414 .fragment_offset = fragment_offset,
417 GNUNET_CRYPTO_hash (&key, sizeof (key), key_hash);
422 * Remove channel from replay request hashmap.
427 * @return #GNUNET_YES if there are more entries to process,
428 * #GNUNET_NO when reached end of hashmap.
431 replay_req_remove_cadet (struct Channel *chn)
433 struct GNUNET_CONTAINER_MultiHashMap *
434 grp_replay_req = GNUNET_CONTAINER_multihashmap_get (replay_req_cadet,
435 &chn->grp->pub_key_hash);
436 if (NULL == grp_replay_req)
439 struct GNUNET_CONTAINER_MultiHashMapIterator *
440 it = GNUNET_CONTAINER_multihashmap_iterator_create (grp_replay_req);
441 struct GNUNET_HashCode key;
442 const struct Channel *c;
444 == GNUNET_CONTAINER_multihashmap_iterator_next (it, &key,
449 GNUNET_CONTAINER_multihashmap_remove (grp_replay_req, &key, chn);
453 GNUNET_CONTAINER_multihashmap_iterator_destroy (it);
459 * Remove client from replay request hashmap.
464 * @return #GNUNET_YES if there are more entries to process,
465 * #GNUNET_NO when reached end of hashmap.
468 replay_req_remove_client (struct Group *grp, struct GNUNET_SERVER_Client *client)
470 struct GNUNET_CONTAINER_MultiHashMap *
471 grp_replay_req = GNUNET_CONTAINER_multihashmap_get (replay_req_client,
473 if (NULL == grp_replay_req)
476 struct GNUNET_CONTAINER_MultiHashMapIterator *
477 it = GNUNET_CONTAINER_multihashmap_iterator_create (grp_replay_req);
478 struct GNUNET_HashCode key;
479 const struct GNUNET_SERVER_Client *c;
481 == GNUNET_CONTAINER_multihashmap_iterator_next (it, &key,
486 GNUNET_CONTAINER_multihashmap_remove (replay_req_client, &key, client);
490 GNUNET_CONTAINER_multihashmap_iterator_destroy (it);
496 * Called whenever a client is disconnected.
498 * Frees our resources associated with that client.
500 * @param cls Closure.
501 * @param client Client handle.
504 client_notify_disconnect (void *cls, struct GNUNET_SERVER_Client *client)
510 = GNUNET_SERVER_client_get_user_context (client, struct Group);
514 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
515 "%p User context is NULL in client_disconnect()\n", grp);
520 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
521 "%p Client (%s) disconnected from group %s\n",
522 grp, (GNUNET_YES == grp->is_origin) ? "origin" : "member",
523 GNUNET_h2s (&grp->pub_key_hash));
525 struct ClientList *cl = grp->clients_head;
528 if (cl->client == client)
530 GNUNET_CONTAINER_DLL_remove (grp->clients_head, grp->clients_tail, cl);
537 while (GNUNET_YES == replay_req_remove_client (grp, client));
539 if (NULL == grp->clients_head)
540 { /* Last client disconnected. */
542 if (NULL != grp->tmit_head)
543 { /* Send pending messages via CADET before cleanup. */
544 transmit_message (grp);
556 * Send message to a client.
559 client_send (struct GNUNET_SERVER_Client *client,
560 const struct GNUNET_MessageHeader *msg)
562 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
563 "%p Sending message to client.\n", client);
565 GNUNET_SERVER_notification_context_add (nc, client);
566 GNUNET_SERVER_notification_context_unicast (nc, client, msg, GNUNET_NO);
571 * Send message to all clients connected to the group.
574 client_send_group (const struct Group *grp,
575 const struct GNUNET_MessageHeader *msg)
577 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
578 "%p Sending message to all clients of the group.\n", grp);
580 struct ClientList *cl = grp->clients_head;
583 GNUNET_SERVER_notification_context_add (nc, cl->client);
584 GNUNET_SERVER_notification_context_unicast (nc, cl->client, msg, GNUNET_NO);
591 * Iterator callback for sending a message to origin clients.
594 client_send_origin_cb (void *cls, const struct GNUNET_HashCode *pub_key_hash,
597 const struct GNUNET_MessageHeader *msg = cls;
598 struct Member *orig = origin;
600 client_send_group (&orig->grp, msg);
606 * Iterator callback for sending a message to member clients.
609 client_send_member_cb (void *cls, const struct GNUNET_HashCode *pub_key_hash,
612 const struct GNUNET_MessageHeader *msg = cls;
613 struct Member *mem = member;
615 if (NULL != mem->join_dcsn)
616 { /* Only send message to admitted members */
617 client_send_group (&mem->grp, msg);
624 * Send message to all origin and member clients connected to the group.
626 * @param pub_key_hash
627 * H(key_pub) of the group.
632 client_send_all (struct GNUNET_HashCode *pub_key_hash,
633 const struct GNUNET_MessageHeader *msg)
636 n += GNUNET_CONTAINER_multihashmap_get_multiple (origins, pub_key_hash,
637 client_send_origin_cb,
639 n += GNUNET_CONTAINER_multihashmap_get_multiple (members, pub_key_hash,
640 client_send_member_cb,
647 * Send message to a random origin client or a random member client.
649 * @param grp The group to send @a msg to.
650 * @param msg Message to send.
653 client_send_random (struct GNUNET_HashCode *pub_key_hash,
654 const struct GNUNET_MessageHeader *msg)
657 n = GNUNET_CONTAINER_multihashmap_get_random (origins, client_send_origin_cb,
660 n = GNUNET_CONTAINER_multihashmap_get_random (members, client_send_member_cb,
667 * Send message to all origin clients connected to the group.
669 * @param pub_key_hash
670 * H(key_pub) of the group.
675 client_send_origin (struct GNUNET_HashCode *pub_key_hash,
676 const struct GNUNET_MessageHeader *msg)
679 n += GNUNET_CONTAINER_multihashmap_get_multiple (origins, pub_key_hash,
680 client_send_origin_cb,
687 * Send fragment acknowledgement to all clients of the channel.
689 * @param pub_key_hash
690 * H(key_pub) of the group.
693 client_send_ack (struct GNUNET_HashCode *pub_key_hash)
695 static struct GNUNET_MessageHeader *msg = NULL;
698 msg = GNUNET_malloc (sizeof (*msg));
699 msg->type = htons (GNUNET_MESSAGE_TYPE_MULTICAST_FRAGMENT_ACK);
700 msg->size = htons (sizeof (*msg));
702 client_send_all (pub_key_hash, msg);
706 struct CadetTransmitClosure
709 const struct GNUNET_MessageHeader *msg;
714 * CADET is ready to transmit a message.
717 cadet_notify_transmit_ready (void *cls, size_t buf_size, void *buf)
721 /* FIXME: connection closed */
724 struct CadetTransmitClosure *tcls = cls;
725 struct Channel *chn = tcls->chn;
726 uint16_t msg_size = ntohs (tcls->msg->size);
727 GNUNET_assert (msg_size <= buf_size);
728 memcpy (buf, tcls->msg, msg_size);
731 if (0 == chn->msgs_pending)
735 else if (0 == --chn->msgs_pending)
737 client_send_ack (&chn->group_pub_hash);
744 * Send a message to a CADET channel.
746 * @param chn Channel.
747 * @param msg Message.
750 cadet_send_channel (struct Channel *chn, const struct GNUNET_MessageHeader *msg)
752 struct CadetTransmitClosure *tcls = GNUNET_malloc (sizeof (*tcls));
758 = GNUNET_CADET_notify_transmit_ready (chn->channel, GNUNET_NO,
759 GNUNET_TIME_UNIT_FOREVER_REL,
761 &cadet_notify_transmit_ready,
763 GNUNET_assert (NULL != chn->tmit_handle);
768 * Create new outgoing CADET channel.
771 * Peer to connect to.
772 * @param group_pub_key
773 * Public key of group the channel belongs to.
774 * @param group_pub_hash
775 * Hash of @a group_pub_key.
779 static struct Channel *
780 cadet_channel_create (struct Group *grp, struct GNUNET_PeerIdentity *peer)
782 struct Channel *chn = GNUNET_malloc (sizeof (*chn));
784 chn->group_pub_key = grp->pub_key;
785 chn->group_pub_hash = grp->pub_key_hash;
787 chn->direction = DIR_OUTGOING;
788 chn->join_status = JOIN_WAITING;
789 chn->channel = GNUNET_CADET_channel_create (cadet, chn, &chn->peer,
790 GNUNET_APPLICATION_TYPE_MULTICAST,
791 GNUNET_CADET_OPTION_RELIABLE);
792 GNUNET_CONTAINER_multihashmap_put (channels_out, &chn->group_pub_hash, chn,
793 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
799 * Create CADET channel and send a join request.
802 cadet_send_join_request (struct Member *mem)
804 mem->origin_channel = cadet_channel_create (&mem->grp, &mem->origin);
805 cadet_send_channel (mem->origin_channel, &mem->join_req->header);
808 for (i = 0; i < mem->relay_count; i++)
811 chn = cadet_channel_create (&mem->grp, &mem->relays[i]);
812 cadet_send_channel (chn, &mem->join_req->header);
818 cadet_send_join_decision_cb (void *cls,
819 const struct GNUNET_HashCode *group_pub_hash,
822 const struct MulticastJoinDecisionMessageHeader *hdcsn = cls;
823 struct Channel *chn = channel;
825 if (0 == memcmp (&hdcsn->member_pub_key, &chn->member_pub_key, sizeof (chn->member_pub_key))
826 && 0 == memcmp (&hdcsn->peer, &chn->peer, sizeof (chn->peer)))
828 cadet_send_channel (chn, &hdcsn->header);
836 * Send join decision to a remote peer.
839 cadet_send_join_decision (struct Group *grp,
840 const struct MulticastJoinDecisionMessageHeader *hdcsn)
842 GNUNET_CONTAINER_multihashmap_get_multiple (channels_in, &grp->pub_key_hash,
843 &cadet_send_join_decision_cb,
849 * Iterator callback for sending a message to origin clients.
852 cadet_send_cb (void *cls, const struct GNUNET_HashCode *pub_key_hash,
855 const struct GNUNET_MessageHeader *msg = cls;
856 struct Channel *chn = channel;
857 if (JOIN_ADMITTED == chn->join_status)
858 cadet_send_channel (chn, msg);
864 * Send message to all connected children.
867 cadet_send_children (struct GNUNET_HashCode *pub_key_hash,
868 const struct GNUNET_MessageHeader *msg)
871 if (channels_in != NULL)
872 n += GNUNET_CONTAINER_multihashmap_get_multiple (channels_in, pub_key_hash,
873 cadet_send_cb, (void *) msg);
879 * Send message to all connected parents.
882 cadet_send_parents (struct GNUNET_HashCode *pub_key_hash,
883 const struct GNUNET_MessageHeader *msg)
886 if (channels_in != NULL)
887 n += GNUNET_CONTAINER_multihashmap_get_multiple (channels_out, pub_key_hash,
888 cadet_send_cb, (void *) msg);
894 * Handle a connecting client starting an origin.
897 client_recv_origin_start (void *cls, struct GNUNET_SERVER_Client *client,
898 const struct GNUNET_MessageHeader *m)
900 const struct MulticastOriginStartMessage *
901 msg = (const struct MulticastOriginStartMessage *) m;
903 struct GNUNET_CRYPTO_EddsaPublicKey pub_key;
904 struct GNUNET_HashCode pub_key_hash;
906 GNUNET_CRYPTO_eddsa_key_get_public (&msg->group_key, &pub_key);
907 GNUNET_CRYPTO_hash (&pub_key, sizeof (pub_key), &pub_key_hash);
910 orig = GNUNET_CONTAINER_multihashmap_get (origins, &pub_key_hash);
915 orig = GNUNET_new (struct Origin);
916 orig->priv_key = msg->group_key;
917 orig->max_fragment_id = GNUNET_ntohll (msg->max_fragment_id);
919 grp->is_origin = GNUNET_YES;
920 grp->pub_key = pub_key;
921 grp->pub_key_hash = pub_key_hash;
923 GNUNET_CONTAINER_multihashmap_put (origins, &grp->pub_key_hash, orig,
924 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
931 struct ClientList *cl = GNUNET_new (struct ClientList);
933 GNUNET_CONTAINER_DLL_insert (grp->clients_head, grp->clients_tail, cl);
935 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
936 "%p Client connected as origin to group %s.\n",
937 orig, GNUNET_h2s (&grp->pub_key_hash));
939 GNUNET_SERVER_client_set_user_context (client, grp);
940 GNUNET_SERVER_receive_done (client, GNUNET_OK);
945 * Handle a connecting client joining a group.
948 client_recv_member_join (void *cls, struct GNUNET_SERVER_Client *client,
949 const struct GNUNET_MessageHeader *m)
951 const struct MulticastMemberJoinMessage *
952 msg = (const struct MulticastMemberJoinMessage *) m;
953 uint16_t msg_size = ntohs (msg->header.size);
955 struct GNUNET_CRYPTO_EcdsaPublicKey mem_pub_key;
956 struct GNUNET_HashCode pub_key_hash, mem_pub_key_hash;
958 GNUNET_CRYPTO_ecdsa_key_get_public (&msg->member_key, &mem_pub_key);
959 GNUNET_CRYPTO_hash (&mem_pub_key, sizeof (mem_pub_key), &mem_pub_key_hash);
960 GNUNET_CRYPTO_hash (&msg->group_pub_key, sizeof (msg->group_pub_key), &pub_key_hash);
962 struct GNUNET_CONTAINER_MultiHashMap *
963 grp_mem = GNUNET_CONTAINER_multihashmap_get (group_members, &pub_key_hash);
964 struct Member *mem = NULL;
969 mem = GNUNET_CONTAINER_multihashmap_get (grp_mem, &mem_pub_key_hash);
973 mem = GNUNET_new (struct Member);
974 mem->priv_key = msg->member_key;
975 mem->pub_key = mem_pub_key;
976 mem->pub_key_hash = mem_pub_key_hash;
977 mem->max_fragment_id = 0; // FIXME
980 grp->is_origin = GNUNET_NO;
981 grp->pub_key = msg->group_pub_key;
982 grp->pub_key_hash = pub_key_hash;
986 grp_mem = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
987 GNUNET_CONTAINER_multihashmap_put (group_members, &grp->pub_key_hash, grp_mem,
988 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
990 GNUNET_CONTAINER_multihashmap_put (grp_mem, &mem->pub_key_hash, mem,
991 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
992 GNUNET_CONTAINER_multihashmap_put (members, &grp->pub_key_hash, mem,
993 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1000 struct ClientList *cl = GNUNET_new (struct ClientList);
1001 cl->client = client;
1002 GNUNET_CONTAINER_DLL_insert (grp->clients_head, grp->clients_tail, cl);
1004 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1005 "%p Client connected to group %s..\n",
1006 mem, GNUNET_h2s (&grp->pub_key_hash));
1007 char *str = GNUNET_CRYPTO_ecdsa_public_key_to_string (&mem->pub_key);
1008 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1009 "%p ..as member %s (%s).\n",
1010 mem, GNUNET_h2s (&mem->pub_key_hash), str);
1013 GNUNET_SERVER_client_set_user_context (client, grp);
1015 if (NULL != mem->join_dcsn)
1016 { /* Already got a join decision, send it to client. */
1017 GNUNET_SERVER_notification_context_add (nc, client);
1018 GNUNET_SERVER_notification_context_unicast (nc, client,
1019 (struct GNUNET_MessageHeader *)
1024 { /* First client of the group, send join request. */
1025 struct GNUNET_PeerIdentity *relays = (struct GNUNET_PeerIdentity *) &msg[1];
1026 uint32_t relay_count = ntohl (msg->relay_count);
1027 uint16_t relay_size = relay_count * sizeof (*relays);
1028 struct GNUNET_MessageHeader *join_msg = NULL;
1029 uint16_t join_msg_size = 0;
1030 if (sizeof (*msg) + relay_size + sizeof (struct GNUNET_MessageHeader)
1033 join_msg = (struct GNUNET_MessageHeader *)
1034 (((char *) &msg[1]) + relay_size);
1035 join_msg_size = ntohs (join_msg->size);
1037 if (sizeof (*msg) + relay_size + join_msg_size != msg_size)
1040 GNUNET_SERVER_client_disconnect (client);
1044 struct MulticastJoinRequestMessage *
1045 req = GNUNET_malloc (sizeof (*req) + join_msg_size);
1046 req->header.size = htons (sizeof (*req) + join_msg_size);
1047 req->header.type = htons (GNUNET_MESSAGE_TYPE_MULTICAST_JOIN_REQUEST);
1048 req->group_pub_key = grp->pub_key;
1049 req->peer = this_peer;
1050 GNUNET_CRYPTO_ecdsa_key_get_public (&mem->priv_key, &req->member_pub_key);
1051 if (0 < join_msg_size)
1052 memcpy (&req[1], join_msg, join_msg_size);
1054 req->member_pub_key = mem->pub_key;
1055 req->purpose.size = htonl (msg_size
1056 - sizeof (req->header)
1057 - sizeof (req->reserved)
1058 - sizeof (req->signature));
1059 req->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST);
1061 if (GNUNET_OK != GNUNET_CRYPTO_ecdsa_sign (&mem->priv_key, &req->purpose,
1064 /* FIXME: handle error */
1068 if (NULL != mem->join_req)
1069 GNUNET_free (mem->join_req);
1070 mem->join_req = req;
1072 if (0 == client_send_origin (&grp->pub_key_hash, &mem->join_req->header))
1073 { /* No local origins, send to remote origin */
1074 cadet_send_join_request (mem);
1077 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1082 client_send_join_decision (struct Member *mem,
1083 const struct MulticastJoinDecisionMessageHeader *hdcsn)
1085 client_send_group (&mem->grp, &hdcsn->header);
1087 const struct MulticastJoinDecisionMessage *
1088 dcsn = (const struct MulticastJoinDecisionMessage *) &hdcsn[1];
1089 if (GNUNET_YES == ntohl (dcsn->is_admitted))
1090 { /* Member admitted, store join_decision. */
1091 uint16_t dcsn_size = ntohs (dcsn->header.size);
1092 mem->join_dcsn = GNUNET_malloc (dcsn_size);
1093 memcpy (mem->join_dcsn, dcsn, dcsn_size);
1096 { /* Refused entry, but replay would be still possible for past members. */
1102 * Join decision from client.
1105 client_recv_join_decision (void *cls, struct GNUNET_SERVER_Client *client,
1106 const struct GNUNET_MessageHeader *m)
1109 grp = GNUNET_SERVER_client_get_user_context (client, struct Group);
1110 const struct MulticastJoinDecisionMessageHeader *
1111 hdcsn = (const struct MulticastJoinDecisionMessageHeader *) m;
1116 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1119 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1120 "%p Got join decision from client for group %s..\n",
1121 grp, GNUNET_h2s (&grp->pub_key_hash));
1123 struct GNUNET_CONTAINER_MultiHashMap *
1124 grp_mem = GNUNET_CONTAINER_multihashmap_get (group_members,
1125 &grp->pub_key_hash);
1126 struct Member *mem = NULL;
1127 if (NULL != grp_mem)
1129 struct GNUNET_HashCode member_key_hash;
1130 GNUNET_CRYPTO_hash (&hdcsn->member_pub_key, sizeof (hdcsn->member_pub_key),
1132 mem = GNUNET_CONTAINER_multihashmap_get (grp_mem, &member_key_hash);
1133 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1134 "%p ..and member %s: %p\n",
1135 grp, GNUNET_h2s (&member_key_hash), mem);
1138 { /* Found local member */
1139 client_send_join_decision (mem, hdcsn);
1142 { /* Look for remote member */
1143 cadet_send_join_decision (grp, hdcsn);
1145 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1150 * Incoming message from a client.
1153 client_recv_multicast_message (void *cls, struct GNUNET_SERVER_Client *client,
1154 const struct GNUNET_MessageHeader *m)
1157 grp = GNUNET_SERVER_client_get_user_context (client, struct Group);
1158 struct GNUNET_MULTICAST_MessageHeader *out;
1159 struct Origin *orig;
1164 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1167 GNUNET_assert (GNUNET_YES == grp->is_origin);
1168 orig = (struct Origin *) grp;
1170 /* FIXME: yucky, should use separate message structs for P2P and CS! */
1171 out = (struct GNUNET_MULTICAST_MessageHeader *) GNUNET_copy_message (m);
1172 out->fragment_id = GNUNET_htonll (++orig->max_fragment_id);
1173 out->purpose.size = htonl (ntohs (out->header.size)
1174 - sizeof (out->header)
1175 - sizeof (out->hop_counter)
1176 - sizeof (out->signature));
1177 out->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_MULTICAST_MESSAGE);
1179 if (GNUNET_OK != GNUNET_CRYPTO_eddsa_sign (&orig->priv_key, &out->purpose,
1185 client_send_all (&grp->pub_key_hash, &out->header);
1186 if (0 == cadet_send_children (&grp->pub_key_hash, &out->header))
1188 client_send_ack (&grp->pub_key_hash);
1192 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1197 * Incoming request from a client.
1200 client_recv_multicast_request (void *cls, struct GNUNET_SERVER_Client *client,
1201 const struct GNUNET_MessageHeader *m)
1203 struct Group *grp = GNUNET_SERVER_client_get_user_context (client, struct Group);
1205 struct GNUNET_MULTICAST_RequestHeader *out;
1209 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1212 GNUNET_assert (GNUNET_NO == grp->is_origin);
1213 mem = (struct Member *) grp;
1215 /* FIXME: yucky, should use separate message structs for P2P and CS! */
1216 out = (struct GNUNET_MULTICAST_RequestHeader *) GNUNET_copy_message (m);
1217 out->member_pub_key = mem->pub_key;
1218 out->fragment_id = GNUNET_ntohll (++mem->max_fragment_id);
1219 out->purpose.size = htonl (ntohs (out->header.size)
1220 - sizeof (out->header)
1221 - sizeof (out->member_pub_key)
1222 - sizeof (out->signature));
1223 out->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST);
1225 if (GNUNET_OK != GNUNET_CRYPTO_ecdsa_sign (&mem->priv_key, &out->purpose,
1231 uint8_t send_ack = GNUNET_YES;
1232 if (0 == client_send_origin (&grp->pub_key_hash, &out->header))
1233 { /* No local origins, send to remote origin */
1234 if (NULL != mem->origin_channel)
1236 cadet_send_channel (mem->origin_channel, &out->header);
1237 send_ack = GNUNET_NO;
1241 /* FIXME: not yet connected to origin */
1242 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1247 if (GNUNET_YES == send_ack)
1249 client_send_ack (&grp->pub_key_hash);
1252 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1257 * Incoming replay request from a client.
1260 client_recv_replay_request (void *cls, struct GNUNET_SERVER_Client *client,
1261 const struct GNUNET_MessageHeader *m)
1263 struct Group *grp = GNUNET_SERVER_client_get_user_context (client, struct Group);
1268 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1271 GNUNET_assert (GNUNET_NO == grp->is_origin);
1272 mem = (struct Member *) grp;
1274 struct GNUNET_CONTAINER_MultiHashMap *
1275 grp_replay_req = GNUNET_CONTAINER_multihashmap_get (replay_req_client,
1276 &grp->pub_key_hash);
1277 if (NULL == grp_replay_req)
1279 grp_replay_req = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1280 GNUNET_CONTAINER_multihashmap_put (replay_req_client,
1281 &grp->pub_key_hash, grp_replay_req,
1282 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1284 struct MulticastReplayRequestMessage *
1285 rep = (struct MulticastReplayRequestMessage *) m;
1286 struct GNUNET_HashCode key_hash;
1287 replay_key_hash (rep->fragment_id, rep->message_id, rep->fragment_offset,
1288 rep->flags, &key_hash);
1289 GNUNET_CONTAINER_multihashmap_put (grp_replay_req, &key_hash, client,
1290 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1292 if (0 == client_send_origin (&grp->pub_key_hash, m))
1293 { /* No local origin, replay from remote members / origin. */
1294 if (NULL != mem->origin_channel)
1296 cadet_send_channel (mem->origin_channel, m);
1300 /* FIXME: not yet connected to origin */
1301 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1305 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1310 cadet_send_replay_response_cb (void *cls,
1311 const struct GNUNET_HashCode *key_hash,
1314 struct Channel *chn = value;
1315 struct GNUNET_MessageHeader *msg = cls;
1317 cadet_send_channel (chn, msg);
1323 client_send_replay_response_cb (void *cls,
1324 const struct GNUNET_HashCode *key_hash,
1327 struct GNUNET_SERVER_Client *client = value;
1328 struct GNUNET_MessageHeader *msg = cls;
1330 client_send (client, msg);
1336 * End of replay response from a client.
1339 client_recv_replay_response_end (void *cls, struct GNUNET_SERVER_Client *client,
1340 const struct GNUNET_MessageHeader *m)
1342 struct Group *grp = GNUNET_SERVER_client_get_user_context (client, struct Group);
1346 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1350 struct MulticastReplayResponseMessage *
1351 res = (struct MulticastReplayResponseMessage *) m;
1353 struct GNUNET_HashCode key_hash;
1354 replay_key_hash (res->fragment_id, res->message_id, res->fragment_offset,
1355 res->flags, &key_hash);
1357 struct GNUNET_CONTAINER_MultiHashMap *
1358 grp_replay_req_cadet = GNUNET_CONTAINER_multihashmap_get (replay_req_cadet,
1359 &grp->pub_key_hash);
1360 if (NULL != grp_replay_req_cadet)
1362 GNUNET_CONTAINER_multihashmap_remove_all (grp_replay_req_cadet, &key_hash);
1364 struct GNUNET_CONTAINER_MultiHashMap *
1365 grp_replay_req_client = GNUNET_CONTAINER_multihashmap_get (replay_req_client,
1366 &grp->pub_key_hash);
1367 if (NULL != grp_replay_req_client)
1369 GNUNET_CONTAINER_multihashmap_remove_all (grp_replay_req_client, &key_hash);
1371 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1376 * Incoming replay response from a client.
1378 * Respond with a multicast message on success, or otherwise with an error code.
1381 client_recv_replay_response (void *cls, struct GNUNET_SERVER_Client *client,
1382 const struct GNUNET_MessageHeader *m)
1384 struct Group *grp = GNUNET_SERVER_client_get_user_context (client, struct Group);
1388 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1392 struct MulticastReplayResponseMessage *
1393 res = (struct MulticastReplayResponseMessage *) m;
1395 const struct GNUNET_MessageHeader *msg = m;
1396 if (GNUNET_MULTICAST_REC_OK == res->error_code)
1398 msg = (struct GNUNET_MessageHeader *) &res[1];
1401 struct GNUNET_HashCode key_hash;
1402 replay_key_hash (res->fragment_id, res->message_id, res->fragment_offset,
1403 res->flags, &key_hash);
1405 struct GNUNET_CONTAINER_MultiHashMap *
1406 grp_replay_req_cadet = GNUNET_CONTAINER_multihashmap_get (replay_req_cadet,
1407 &grp->pub_key_hash);
1408 if (NULL != grp_replay_req_cadet)
1410 GNUNET_CONTAINER_multihashmap_get_multiple (grp_replay_req_cadet, &key_hash,
1411 cadet_send_replay_response_cb,
1414 if (GNUNET_MULTICAST_REC_OK == res->error_code)
1416 struct GNUNET_CONTAINER_MultiHashMap *
1417 grp_replay_req_client = GNUNET_CONTAINER_multihashmap_get (replay_req_client,
1418 &grp->pub_key_hash);
1419 if (NULL != grp_replay_req_client)
1421 GNUNET_CONTAINER_multihashmap_get_multiple (grp_replay_req_client, &key_hash,
1422 client_send_replay_response_cb,
1428 client_recv_replay_response_end (cls, client, m);
1431 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1436 * A new client connected.
1439 client_notify_connect (void *cls, struct GNUNET_SERVER_Client *client)
1441 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client connected: %p\n", client);
1442 /* FIXME: send connect ACK */
1447 * Message handlers for the server.
1449 static const struct GNUNET_SERVER_MessageHandler server_handlers[] = {
1450 { client_recv_origin_start, NULL,
1451 GNUNET_MESSAGE_TYPE_MULTICAST_ORIGIN_START, 0 },
1453 { client_recv_member_join, NULL,
1454 GNUNET_MESSAGE_TYPE_MULTICAST_MEMBER_JOIN, 0 },
1456 { client_recv_join_decision, NULL,
1457 GNUNET_MESSAGE_TYPE_MULTICAST_JOIN_DECISION, 0 },
1459 { client_recv_multicast_message, NULL,
1460 GNUNET_MESSAGE_TYPE_MULTICAST_MESSAGE, 0 },
1462 { client_recv_multicast_request, NULL,
1463 GNUNET_MESSAGE_TYPE_MULTICAST_REQUEST, 0 },
1465 { client_recv_replay_request, NULL,
1466 GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_REQUEST, 0 },
1468 { client_recv_replay_response, NULL,
1469 GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_RESPONSE, 0 },
1471 { client_recv_replay_response_end, NULL,
1472 GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_RESPONSE_END, 0 },
1474 { NULL, NULL, 0, 0 }
1479 * New incoming CADET channel.
1482 cadet_notify_channel_new (void *cls,
1483 struct GNUNET_CADET_Channel *channel,
1484 const struct GNUNET_PeerIdentity *initiator,
1486 enum GNUNET_CADET_ChannelOption options)
1493 * CADET channel is being destroyed.
1496 cadet_notify_channel_end (void *cls,
1497 const struct GNUNET_CADET_Channel *channel,
1503 struct Channel *chn = ctx;
1504 if (NULL != chn->grp)
1506 if (GNUNET_NO == chn->grp->is_origin)
1508 struct Member *mem = (struct Member *) chn->grp;
1509 if (chn == mem->origin_channel)
1510 mem->origin_channel = NULL;
1514 while (GNUNET_YES == replay_req_remove_cadet (chn));
1521 * Incoming join request message from CADET.
1524 cadet_recv_join_request (void *cls,
1525 struct GNUNET_CADET_Channel *channel,
1527 const struct GNUNET_MessageHeader *m)
1529 const struct MulticastJoinRequestMessage *
1530 req = (const struct MulticastJoinRequestMessage *) m;
1531 uint16_t size = ntohs (m->size);
1532 if (size < sizeof (*req))
1534 GNUNET_break_op (0);
1535 return GNUNET_SYSERR;
1539 GNUNET_break_op (0);
1540 return GNUNET_SYSERR;
1542 if (ntohl (req->purpose.size) != (size
1543 - sizeof (req->header)
1544 - sizeof (req->reserved)
1545 - sizeof (req->signature)))
1547 GNUNET_break_op (0);
1548 return GNUNET_SYSERR;
1551 GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST,
1552 &req->purpose, &req->signature,
1553 &req->member_pub_key))
1555 GNUNET_break_op (0);
1556 return GNUNET_SYSERR;
1559 struct GNUNET_HashCode group_pub_hash;
1560 GNUNET_CRYPTO_hash (&req->group_pub_key, sizeof (req->group_pub_key), &group_pub_hash);
1562 struct Channel *chn = GNUNET_malloc (sizeof *chn);
1563 chn->channel = channel;
1564 chn->group_pub_key = req->group_pub_key;
1565 chn->group_pub_hash = group_pub_hash;
1566 chn->member_pub_key = req->member_pub_key;
1567 chn->peer = req->peer;
1568 chn->join_status = JOIN_WAITING;
1569 GNUNET_CONTAINER_multihashmap_put (channels_in, &chn->group_pub_hash, chn,
1570 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1572 client_send_all (&group_pub_hash, m);
1578 * Incoming join decision message from CADET.
1581 cadet_recv_join_decision (void *cls,
1582 struct GNUNET_CADET_Channel *channel,
1584 const struct GNUNET_MessageHeader *m)
1586 const struct MulticastJoinDecisionMessage *
1587 dcsn = (const struct MulticastJoinDecisionMessage *) m;
1588 uint16_t size = ntohs (m->size);
1589 if (size < sizeof (*dcsn))
1591 GNUNET_break_op (0);
1592 return GNUNET_SYSERR;
1594 struct Channel *chn = *ctx;
1597 GNUNET_break_op (0);
1598 return GNUNET_SYSERR;
1600 if (NULL == chn->grp || GNUNET_NO != chn->grp->is_origin)
1602 GNUNET_break_op (0);
1603 return GNUNET_SYSERR;
1605 switch (chn->join_status)
1608 return GNUNET_SYSERR;
1613 case JOIN_NOT_ASKED:
1618 struct MulticastJoinDecisionMessageHeader *
1619 hdcsn = GNUNET_malloc (sizeof (*hdcsn) + size);
1620 hdcsn->peer = chn->peer;
1621 memcpy (&hdcsn[1], dcsn, sizeof (*hdcsn) + size);
1623 struct Member *mem = (struct Member *) chn->grp;
1624 client_send_join_decision (mem, hdcsn);
1625 GNUNET_free (hdcsn);
1626 if (GNUNET_YES == ntohs (dcsn->is_admitted))
1628 chn->join_status = JOIN_ADMITTED;
1633 chn->join_status = JOIN_REFUSED;
1634 return GNUNET_SYSERR;
1639 * Incoming multicast message from CADET.
1642 cadet_recv_message (void *cls,
1643 struct GNUNET_CADET_Channel *channel,
1645 const struct GNUNET_MessageHeader *m)
1647 const struct GNUNET_MULTICAST_MessageHeader *
1648 msg = (const struct GNUNET_MULTICAST_MessageHeader *) m;
1649 uint16_t size = ntohs (m->size);
1650 if (size < sizeof (*msg))
1652 GNUNET_break_op (0);
1653 return GNUNET_SYSERR;
1655 struct Channel *chn = *ctx;
1658 GNUNET_break_op (0);
1659 return GNUNET_SYSERR;
1661 if (ntohl (msg->purpose.size) != (size
1662 - sizeof (msg->header)
1663 - sizeof (msg->hop_counter)
1664 - sizeof (msg->signature)))
1666 GNUNET_break_op (0);
1667 return GNUNET_SYSERR;
1670 GNUNET_CRYPTO_eddsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_MESSAGE,
1671 &msg->purpose, &msg->signature,
1672 &chn->group_pub_key))
1674 GNUNET_break_op (0);
1675 return GNUNET_SYSERR;
1678 client_send_all (&chn->group_pub_hash, m);
1684 * Incoming multicast request message from CADET.
1687 cadet_recv_request (void *cls,
1688 struct GNUNET_CADET_Channel *channel,
1690 const struct GNUNET_MessageHeader *m)
1692 const struct GNUNET_MULTICAST_RequestHeader *
1693 req = (const struct GNUNET_MULTICAST_RequestHeader *) m;
1694 uint16_t size = ntohs (m->size);
1695 if (size < sizeof (*req))
1697 GNUNET_break_op (0);
1698 return GNUNET_SYSERR;
1700 struct Channel *chn = *ctx;
1703 GNUNET_break_op (0);
1704 return GNUNET_SYSERR;
1706 if (ntohl (req->purpose.size) != (size
1707 - sizeof (req->header)
1708 - sizeof (req->member_pub_key)
1709 - sizeof (req->signature)))
1711 GNUNET_break_op (0);
1712 return GNUNET_SYSERR;
1715 GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_MULTICAST_REQUEST,
1716 &req->purpose, &req->signature,
1717 &req->member_pub_key))
1719 GNUNET_break_op (0);
1720 return GNUNET_SYSERR;
1723 client_send_origin (&chn->group_pub_hash, m);
1729 * Incoming multicast replay request from CADET.
1732 cadet_recv_replay_request (void *cls,
1733 struct GNUNET_CADET_Channel *channel,
1735 const struct GNUNET_MessageHeader *m)
1737 struct MulticastReplayRequestMessage rep;
1738 uint16_t size = ntohs (m->size);
1739 if (size < sizeof (rep))
1741 GNUNET_break_op (0);
1742 return GNUNET_SYSERR;
1744 struct Channel *chn = *ctx;
1746 memcpy (&rep, m, sizeof (rep));
1747 memcpy (&rep.member_pub_key, &chn->member_pub_key, sizeof (chn->member_pub_key));
1749 struct GNUNET_CONTAINER_MultiHashMap *
1750 grp_replay_req = GNUNET_CONTAINER_multihashmap_get (replay_req_cadet,
1751 &chn->grp->pub_key_hash);
1752 if (NULL == grp_replay_req)
1754 grp_replay_req = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1755 GNUNET_CONTAINER_multihashmap_put (replay_req_cadet,
1756 &chn->grp->pub_key_hash, grp_replay_req,
1757 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1759 struct GNUNET_HashCode key_hash;
1760 replay_key_hash (rep.fragment_id, rep.message_id, rep.fragment_offset,
1761 rep.flags, &key_hash);
1762 GNUNET_CONTAINER_multihashmap_put (grp_replay_req, &key_hash, chn,
1763 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1765 client_send_random (&chn->group_pub_hash, &rep.header);
1771 * Incoming multicast replay response from CADET.
1774 cadet_recv_replay_response (void *cls,
1775 struct GNUNET_CADET_Channel *channel,
1777 const struct GNUNET_MessageHeader *m)
1779 struct Channel *chn = *ctx;
1781 /* @todo FIXME: got replay error response, send request to other members */
1788 * Message handlers for CADET.
1790 static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
1791 { cadet_recv_join_request,
1792 GNUNET_MESSAGE_TYPE_MULTICAST_JOIN_REQUEST, 0 },
1794 { cadet_recv_message,
1795 GNUNET_MESSAGE_TYPE_MULTICAST_MESSAGE, 0 },
1797 { cadet_recv_request,
1798 GNUNET_MESSAGE_TYPE_MULTICAST_REQUEST, 0 },
1800 { cadet_recv_replay_request,
1801 GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_REQUEST, 0 },
1803 { cadet_recv_replay_response,
1804 GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_RESPONSE, 0 },
1811 * Listening ports for CADET.
1813 static const uint32_t cadet_ports[] = { GNUNET_APPLICATION_TYPE_MULTICAST, 0 };
1817 * Connected to core service.
1820 core_connected_cb (void *cls, const struct GNUNET_PeerIdentity *my_identity)
1822 this_peer = *my_identity;
1824 stats = GNUNET_STATISTICS_create ("multicast", cfg);
1825 origins = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1826 members = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1827 group_members = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1828 channels_in = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1829 channels_out = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
1830 replay_req_cadet = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1831 replay_req_client = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_NO);
1833 cadet = GNUNET_CADET_connect (cfg, NULL,
1834 &cadet_notify_channel_new,
1835 &cadet_notify_channel_end,
1836 cadet_handlers, cadet_ports);
1838 nc = GNUNET_SERVER_notification_context_create (server, 1);
1839 GNUNET_SERVER_add_handlers (server, server_handlers);
1840 GNUNET_SERVER_disconnect_notify (server,
1841 &client_notify_disconnect, NULL);
1842 GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
1850 * @param cls closure
1851 * @param server the initialized server
1852 * @param cfg configuration to use
1856 struct GNUNET_SERVER_Handle *srv,
1857 const struct GNUNET_CONFIGURATION_Handle *c)
1861 GNUNET_SERVER_connect_notify (server, &client_notify_connect, NULL);
1862 core = GNUNET_CORE_connect (cfg, NULL, &core_connected_cb, NULL, NULL,
1863 NULL, GNUNET_NO, NULL, GNUNET_NO, NULL);
1868 * The main function for the multicast service.
1870 * @param argc number of arguments from the command line
1871 * @param argv command line arguments
1872 * @return 0 ok, 1 on error
1875 main (int argc, char *const *argv)
1877 return (GNUNET_OK ==
1878 GNUNET_SERVICE_run (argc, argv, "multicast",
1879 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1882 /* end of gnunet-service-multicast.c */